When I saw on the internet pictures of tourists walking on the roof of the Cathedral of Our Lady of Grace in Leon, I knew immediately that I had to visit this place. This Unesco-listed pearl of Ibero-American architecture from the turn of the 18th and 19th centuries is one of the largest buildings of this type in Central America. A stroll among the shining white domes and attics and the beautiful panoarama of the city of Leon simply knocked me off my feet.